I looked but didn't see another topic about this; apologies if it's a duplicate.

Many release-level relationships will be the same among all releases in a release group, yet you can only apply them to one release at a time, and I don't see any way to copy them or apply them to the whole release group at once.

For instance, I'm looking at a list of about 20 performers in the orchestra for this release group, with no track-level breakdown: https://beta.musicbrainz.org/release-group/a86012db-9ba2-3670-8685-8a747ba27fd0

As it stands, I should apply all performers to each release, but honestly I'm only going to do one of them. Of course, that leads to the problem I encounter on the tagging side: one release in a group might have very good credits available, but the only way for the user to know which is to look at each one...